643609952

素因数分解:

$2^5\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{19973}}^1$

素因数の和:20055

約数の個数: 48

約数和(自身を含む): 1359030960

約数和(自身を除く): 715421008

約数列:

[1, 2, 4, 8, 16, 19, 32, 38, 53, 76, 106, 152, 212, 304, 424, 608, 848, 1007, 1696, 2014, 4028, 8056, 16112, 19973, 32224, 39946, 79892, 159784, 319568, 379487, 639136, 758974, 1058569, 1517948, 2117138, 3035896, 4234276, 6071792, 8468552, 12143584, 16937104, 20112811, 33874208, 40225622, 80451244, 160902488, 321804976, 643609952]

約数ペア:

[(1, 643609952), (2, 321804976), (4, 160902488), (8, 80451244), (16, 40225622), (19, 33874208), (32, 20112811), (38, 16937104), (53, 12143584), (76, 8468552), (106, 6071792), (152, 4234276), (212, 3035896), (304, 2117138), (424, 1517948), (608, 1058569), (848, 758974), (1007, 639136), (1696, 379487), (2014, 319568), (4028, 159784), (8056, 79892), (16112, 39946), (19973, 32224)]